I am developing a ASP.NET MVC project. In my project, I am using Entity Framework code first approach. But I am having a problem with that.
This is item class
class Item{
public int Id { get; set; }
.
.
.
public virtual ICollection<Category> Categories { get; set; }
}
This is category class
public class Category{
public int Id{ get; set; }
public int Name { get; set; }
public virtual ICollection<Item> Items { get; set; }
}
As you can see above they are in many-to-many relationship. What I want to do is as below.
var item = db.find(2); //I retrieve a single item
var item.Categories; // this is how I get all categories of that item
item.Categories.Select(x=>x.Name).Join(?); // I want to retrieve all category names of that item as CSV value.
How can I achieve this?
Since you already for all the categories for this item, I am assuming you are looking for how to convert a list of string to comma separated string. Is that right? If so, then you can do what is shown here: Converting a generic list to a CSV string
IEnumerable<T> myList;
string csv = String.Join(",", myList.Select(x => x.ToString()).ToArray());
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